Helsinki - Stockholm has too many travellers for a 19-seater. :) Planes like this will most likely be used for routes from very small local airports to larger

Helsinki - Stockholm has too many travellers for a 19-seater. :) Planes like this will most likely be used for routes from very small local airports to larger regional ones. I'd guess it's more likely to cover things like Rønne - Copenhagen, or Mariehamn - Helsinki.